Garage-door opener and closer



H. W. BRANDT GARAGE DOOR OPENER AND CLOSER Filed Dec. 6, 1922 2 Sheets-Sheet 1 ENTOR. 1i. mum,

I W ATTORNEY H. w. BRANDT GARAGE DOORRJPENER AND CLOSER May 26; 1925.

Filed Dec. 6, 1922 2 Sheets-Sheet 2 T all whom it 'limg concern:

position.

Patented May 26,1925. 4

UNITED srares PATENT ()FFICE fnnnivmnw. BRANDT, or ANTIGO, WISCONSIN.

eanaen-nooaornnna Ann chosen,

Application filed December 6, 1922. Serial No. 605,202.

Be it known that HERMAN WV. BRANDT, who says heis acitizen of the United States of America, residing at Antigo, in the county of Langla'de and State of lVisconsin,

has invented certain new and useful Improveinents 1n Garage-Door Openers and of which the following is a speci- Closers, fication; s

Thisinvention relates togarage or'other building doors and particularly to a mechanism whereby they may be Conveniently opened and closed, as for instance by a motor vehicle or wagon driver without lcav-, ing his seat or vehicle.

The particular ob ect of. myflinvention is to provide a mechanismwhereby the two folding or swinging doors ofba building may be simultaneously openedor closed by the inai'iipulation of a single operating eable Other features reside in the particular structural elements which include a simple operating gearing, an automatic latching mechanism for the doors at each end oftheir movements, the arrangement of the control-' ling cables and other novel. details of construction. p

In the accompanying drawings Figure 1 is an inside view of a'portion of a building showing the doors in closed Figure 2 is a vertical sectionalyiew taken on the line 2- 201": Figure 1, looking in the direction of the arrows, and w Figure 8 is a horizontal section through T one of the doors audits supporting frame on the line 3-3 of Figure 2, the door belng shown in open position in dotted lines.

Referringno-W more specifically to the ac-' companying drawings by; numerals of refere-nee, 2 indicates a building such as a garage, stable or the like, the door frame for which is shown at'3, '4, representing the vertical members and 6 the top horizontal member thereof.

Hung on hinges 8 on the vertical members of the door frame are the double doors 10 and 12. V

In view of the fact-that the operation and construction of each of the doors is similar to the other, a description of one will be suflicient, it being of course'understood that the mechanism o-n one door operates in areverse manner to the other. Referring particularly to Figure 3, which bearingbolt' or pin 18 upon which is journalled a bevel gear 20 having an integral or rlgld radial lever arm 22.

The gem-"2019111 mesh with a horizontal lv oscillatory bevel gear 24 ournalled on a vertical bearing belt or pin 26on the plate bracket 16,said gear 24 also being provided with aliO-llZOlltfil radial rlgid'or fixed arm 28, the outer end of which is curved out wardlyi as at 30 and carries anlantifriction" roller 32 journalled on a vertical pivot or axis34, a,

During the opening and closing opera-- tion, of the door, the roller 32 cooperates with a horizontally slotted guide iron or strap 36 secured to the door by suitable fastening devices 38 the body of the guide ironjor strap being spaced away from the innerface of the door to provide a runway forthe roller which is designed to straddle theslot in the strap 36. For the sake of convenience in manufacture, the radial arm may be formed separate from thebody of its carrying portion and to. which it may be secured byadjustable bolts 40.

The doors are opened and closed the medium of pull cords, or cables 42, and 44, which pass through a tubular horizontal arm 46, supported upon the door fran'ic up on its outerside by a bracket arm 48, the

through tubular metalarm extending asu llicicntf distance fro-m'the front of thebuilding to permit thezoperato-r of a vehicle, opening the doors Without leaving his'seat."

' The operating cables or ropes extend inwardly' through the tubular arm 46 and within the building, passing thence over guideipulleys 50- and '52 upon; opposite sides of the door frame respectively at the top thereofand over guide pulleys 54 below, the point of attachment of the plates 14 to the side members of said frame; For the sake of deliniteness, the openingcable will be referred to as 42 and the closing cable as 44. r

The cables 42 and 44 which. of course cooperate respectively with the operating r the arm 28 and open the doors.

of the opening operation, the opposite latch bolt snaps into the upper notch 66 and mechanism upon each door, are interconnected so that they operate in uni-son from a single pull rope upon the outside of the building as shown in Figure 2.

Each of the opening and closing cables is connected withits operating lever 22 by being passed around a pulley journalled' on the lever adjacent its outer end at 5 6, so that it has frictional engagement therewith. i V i The cables 42 and i l, respectively after passing around the pulley 5% are connected with pa 'allel latch bolts 60 and 62 whlch slide in transverse guides (34, and onthe lever 22, notches ($6 at opposite ends of a sector 68. The latches are normally urged toward latching position through compression springs '70 coiled around the latch bolts and confined between a stop thereon and the outer one of the transverse guides 64-.

Briefly, the operation of the door opening and closing mechanism is as follows Assuming the doors are closed, as in full lines in Figure 3, the operator, by pulling on the cord 42, outside the building, through its continuation on the inside, p imarily retracts the latch bolt 0 from the lower notch 66 in the sector 68, after which, a continued pull on the rope, will elevate the lever-arm 22 and through the bevel gearing, swing At the end thereby holds the door open; A reversal of the operation is performed by a pull on the closing rope 44..

From the foregoing description of the construct-ion of my improved apparatus, it

will be seen that I have provided a simple,

inexpensive, and efficient means for carrying out the ob ects of my invention and while I have described the elements best parting from thespirit or sacrificing any of the principles of the invention.

lVhat I claim as new is v 1. In a door opening and closing mechanism, in combination with the vertical door frame members and the doors hinged thereon, a plate mounted on each'of said frame members, a bevel gear journalled on said plate in a verticalplane, a radial operating lever rigid with said. gear, a second bevel gear journalled on said plate perpendicular to said first gear and in mesh and cooperate with a pair of 2. In a door opening and closing mechanism, the combination with a vertical door frame and a door hinged thereto; of a base plate mounted on said frame memher, said plate having an arcuate portion formed thereon provided at predetermined points in its peripheral edge with notches,

a bevel gear journaled on said plate on a horizontal axis, a radial operating lever carried by said gear, a second bevel gear supported for rotation on said plate on a vertical axis and meshing with the first mentioned gear, a radial arm rigidly carried on the second gear and having its outer end in sliding engagement with said door, latch members carried by said lever adapted for engagement with the notches of said plate to hold said'lever and correspondingly lock said door in its adjusted positions, and pull cables havingconnection with said lever and also actuating said latch members.

3.. In a door opening and closing mechanism, the combination vith a vertical door frame and a door hinged thereto; of a base plate mounted on said frame member, said plate having an arcuate portion formed thereon provided at predetermined points in its peripheral edge with notches, a bevel gear journaled on said plate on a horizontal axis, a radial operating lever carried by said gear, a second bevel gear supported for rotation on said plate on a vertical axis, and meshing with the first mentioned gear, a radial arm rigidly carried on the second gear andhaving its outer end in sliding engagement'with said door, a pulley mounted on the free end of said lever, a pair of parallel spring-forced latch members eX- tending longitudinally of said lever and adapted for engagement with the notches in the arcuate portion of the aforesaid plate tolock said lever and correspondingly said door in adjusted positions, and a pair of pull cables extending through said frame members and from opposite directions extended over said pulley and connected respectively with-said latch members, as and for the purposes described.

In testimony whereof I allix my signature. 

